Home / 131,664,769.88-181,697,379-72,931,218.56

Finding the Fourth Proportional to 131,664,769.88, 181,697,379 and 72,931,218.56

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Solution

The fourth proportional to 131,664,769.88, 181,697,379 and 72,931,218.56 is: 100,645,079.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,664,769.88 : 181,697,379 = 72,931,218.56 : x
  2. Step 2: Convert to fraction form
    131,664,769.88/181,697,379 = 72,931,218.56/x
  3. Step 3: Cross multiply
    131,664,769.88x = 181,697,379 × 72,931,218.56
  4. Step 4: Simplify right side
    131,664,769.88x = 13,251,411,259,628,154
  5. Step 5: Solve for x
    x = 13,251,411,259,628,154/131,664,769.88
  6. Step 6: Final answer
    x = 100,645,079.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.